Bug 2310378 (CVE-2023-52916)

Summary: CVE-2023-52916 kernel: media: aspeed: Fix memory overwrite if timing is 1600x900
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2024-09-06 09:20:39 UTC 
In the Linux kernel, the following vulnerability has been resolved:

media: aspeed: Fix memory overwrite if timing is 1600x900

When capturing 1600x900, system could crash when system memory usage is
tight.

The way to reproduce this issue:
1. Use 1600x900 to display on host
2. Mount ISO through 'Virtual media' on OpenBMC's web
3. Run script as below on host to do sha continuously
  #!/bin/bash
  while [ [1] ];
  do
	find /media -type f -printf '"%h/%f"\n' | xargs sha256sum
  done
4. Open KVM on OpenBMC's web

The size of macro block captured is 8x8. Therefore, we should make sure
the height of src-buf is 8 aligned to fix this issue.
Comment 1 Michal Findra 2024-09-06 10:45:44 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024090655-CVE-2023-52916-edc0@gregkh/T